Connecter for an electricity and fluid conductor



March 15, 1938.

W. H. MARTIN CONNECTER FOR AN ELECTRICITY AND FLUID CONDUCTOR Filed Aug. 27, 1936 Patented Mar. 15, 1938 v PATENT oFFlCE CONNECTER FOR AN ELECTRICITY AND FLUID CONDUCTOR William H. Martin, Detroit, Mich.

Application August 27, 1936, Serial No. 98,185

ll Claim.

My invention has for its object to provide a fluid conductive electric cable terminal. The invention particularly relates to connecters ior connecting electric cables to parts of an electrical apparatus or device for conducting large currents which require forced cooling to prevent excess heat losses.

In some forms of combined electric and fluid conductors, flexible thin Wall pipes are located within woven or twisted strands having a plurality of wires. The cable is surrounded by suitable electrical insulating material, such as rubber. To establish fluid and electric connection with a part of an apparatus, a free passageway of the fluid flow through the pipe and the part to which it is connected must be established and low contact resistance must be made intermediate the wire and the part of the apparatus. By my invention I have provided a means whereby the fluid and electric connection may be readily estab'lished.

Fig. 1 illustrates a side view of the connecter and the cable connected and ready for use. Fig. 2 illustrates a View of a section of the structure shown in Fig. 1. Fig. 3 illustrates certain parts in relative displaced positions to indicate the method of producing the connection between the parts.

The cable I comprisesthe inter-twisted Wires 2 that are Vformed into strands 3 that are similarly twisted to form a rope-like flexible cable of the small wires for conducting large current quantities. The strands are disposed about a thin walled flexible pipe 4 that extends throughout the length of the cable. .The cable is surrounded by an insulating material 6 such as rubber that is molded on to the wires. The end of the cable is provided with a metal sleeve, such as the sleeve 1 that surrounds and tightly binds the wires. The

sleeve 1 is surrounded by the insulating rubber 6. vIf desired, the cable may be cut and the sleeve 1 may be pressed up between the wire strands and the rubber insulation. The sleeve 1 operates to hold the small wires that form the cable in their respective positions. l

Preparatory to connecting the cable with a connecter, end portions of the rubber 6 are cut away from the surface of the sleeve 1. The connecter t has a recess or socket il and an axially extending opening ii having a diameter the same as that of the pipe E. An aluminum rod l2 f1tting the opening il and the end of the pipe il is inserted through the connecter 8 and into the end of the pipe. Molten solder i3 is placed in the bottom of the socket 9 and while still in a molten state, the end part of the cable is pressed down into the socket. 'I'he solder flows about the exterior surface of the pipe, through the interstices of o the wires of the cable, the interior surface of the sleeve 1, and intermediate the exterior surface of the sleeve 1 and the interior surface of the socket il. When the solder has hardened the electrical connection is established. Also, the aluminum 15 rod i2 may be withdrawn fro-m the connecter and the pipe leaving a passageway for free fluid flow through the pipe 4 and the connecter 8.

The connecter may be provided with a threaded part i6 whereby a connection may be established 20 with a part of an apparatus in which large currents are used. If the sleeve is forced between the wires and the sleeve, the insulation rubber 6 may be tightly secured to the sleeve 1 by means of a wire binder l1. 25

I claim:

An electric and uid connecter, a conductor having a plurality of externally insulated ilexible strands and a centrally located fluid passageway,

the connecter having a fluid passageway there- 30 through, in axial registration with the passageway of the connecter and a socket located in an end part of the connecter, a sleeve located intermediate the exterior insulation and the strands of the conductor and protruding from the end of the 35 insulation substantially the depth of the socket and having an end part located in the socket in substantially abutting relation with the bottom of Vthe socket and in fitting relation to the side surfaces of the socket, solder filling the spaces 40 rintermediate parts of the contiguous strands and the sleeve located in the socket and the bottom and side surfaces of the socket for securing and electrically connecting the connecter to the conductor and maintaining continuity of the fluid 45 passageways through the connecter and the conductor.

WILLIAM H. MARTIN. 

